Way back in the day multiple inning saves were Rollie Fingers' specialty, including in his short time in Milwaukee. Most of them were 2 or 3 innings though. He went 4 innings against the Yankees in 1982, but got a win not a save. He went 4 innings a few times in 1981 too for the Brewers, but didn't record a 4 inning save (he took the loss in one and won the other).